From dd41ce0aea48eb532db2292fe072f1119b41942a Mon Sep 17 00:00:00 2001
From: siveshs <siveshs@gmail.com>
Date: Fri, 2 Jul 2010 13:20:41 +0000
Subject: still testing

---
 Fourier Series.page | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/Fourier Series.page b/Fourier Series.page
index 4ece8ea..d81f78b 100644
--- a/Fourier Series.page	
+++ b/Fourier Series.page	
@@ -38,8 +38,14 @@ Rearranging,
 $\qquad\sin^3(x) = \frac{3\sin(x)-\sin(3x)}{4}$  
 
 Substituting back in the former equation, we get  
-$\sin(2x).\cos(x) = 2 \sin(x) - 2 [\frac{3\sin(x)-\sin(3x)}{4}]$  
   
+$$
+\begin{array}
+\sin(2x) & = & 2\sin(x) - 2 [\frac{3\sin(x)-\sin(3x)}{4}]\\ 
+& = & \frac{1}{2}\sin(x) + \frac{1}{2}\sin(3x)\\
+\end{array}
+$$
+    
 ##What is the Fourier series actually?</b>
 
 ##Why is Fourier series useful? </b>
-- 
cgit v1.2.3